graphics context Example
This program uses the surface of a JFrame to draw a cyan rectangle on a black one. It is the paint() method of JFrame that does the drawing inside a panel. It is overridden with the one shown here. Notice that its Graphics parameter provides the graphics context.
// Graphics Context JFrame Example
import java.awt.*;
import javax.swing.*;
class GraphicsContextExample2 extends JFrame {
public GraphicsContextExample2() {
super();
setSize(300,300);
setVisible(true);
}
@Override public void paint(Graphics g) {
super.paint(g);
g.fillRect(0,0,getWidth(),getHeight());
g.setColor(Color.cyan);
g.fillRect(100,100,100,100);
}
static public void main(String[] args) {
new GraphicsContextExample2();
}
}